Bd AFM? bogs when driving

[mk3-4-me]

Ok so i just got my 560s in, put it all back together. It idles great, although its at like 1300 now, idk why it raised up a lil. But anyways, when im driving and give it a lil gas to get up n goin, it bogs repetively.

Im thinkin its the AFM maybe. I checked the Ohms, and i get like 565.5 k ohms for E1 - KS and 174.6ish for VC - E1. Supposed to be 5 - 10 k ohms forthe first one.

Its WAY off, but maybe im just testing it wrong? or does it usually go that big of a number when its dead?

No codes.

 

[JStoked]

How was it running before you swapped the injectors? Also do you have a afpr? Whats your set up?

 

[mk3-4-me]

It ran great before I put the injectors in.

As far as set up... I have the Lexus AFM and 560s in with a WB to monitor. Denso 280lph fuel pump.

Built motor if that's what your also asking.

But it ran great before I swapped injectors.

No AFPR yet.

 

[mk3-4-me]

What do you guys suspect? There aren't any codes, so idk what it could be.

Maybe the stock FPR can't handle the injectors?? But I wasn't even given it alot of gas, just some to get goin.

 

[Turbo Habanero]

what spark plugs are you using and what gap? and how much boost? on what size turbo?

 

[jonahs_supra]

did you figure out your misfire issue?

 

[mk3-4-me]

Ok so I got the AFRs at idle to 14.6-15.6 ish. When I drive it, if I give it gas, it gies straight to 13, and if I give a lil more, it goes to 12.

So it seems that it's getting really rich any time I give it gas. When I ease into it, I can cruise at 14.6 ish AFRs.

What could that be?? I have the lexus AFM, and I out the screw in pretty deep cause if it's out any further, the AFRs at idle goes to more than 18!! Just the - - - shows in red. So i didn't think that was right, so I screwed it in till it was good.

 

[Turbo Habanero]

I would look a Spark and AFM issues..

Sounds really similar to my current issue. But i know mine is definitely spark and possibly AFM related

 

[mk3-4-me]

Well I know I have spark. I pulled wires off and checked.

I'm thinking it's the AFM to but the one I have is from Toyota and only has like 10k on it.

---------- Post added at 11:40 PM ---------- Previous post was at 11:27 PM ----------

did you figure out your misfire issue?

Yes my number 3 clip wasn't all the way on lol

 

[jonahs_supra]

Lol props and good luck with your new issue lol

Sent from my PC36100 using Tapatalk

 

[mk3-4-me]

Would having the screw in the lexus AFM in to far cause thus maybe? I just had to screw It in farther then what it was to get my idle AFR at around 15.

Before it went past 18 into the 3 red dashes. It's not good to have it that lean at idle is it?

Maybe it's just giving way to much fuel and it's just bogging out?? When I give a lil gas it goes straight to 13. Before I put my injectors in, it stayed at like 14 ish unless I gave it alot if gas..

 

[3p141592654]

What is your Vf voltage under cruise and idle conditions?

 

[mk3-4-me]

Idk I havnt checked, ir know how to check that... Lol but it ran perfectly fine 2 days ago.

It's gotta be somethin with the bigger injectors or the Lexus AFM.

 

[mk3-4-me]

So this hasn't happened to anyone on here?

 

[jonahs_supra]

correct me if im wrong
but dont you need some sort of fuel management to succesfully run the lex/550s or 560s?

 

[yongai27]

yeah you need like a safc or sm similar

 

[mk3-4-me]

Ya I didn't think you needed anythin either.., ya it prolly wouldn't be the best performance, but at least it should drive fine... Idk I'm trying to get my maf-t in.

 

[3p141592654]

Not true, the original inventor (Reg Reimer) of this mod used a special air bypass screw in the AFM to tune things up. Later it became popular to go with an AFPR instead of the screw. The piggybacks are definitely not needed.

Rather than ignore Vf, you should look at it and see if the ECU thinks things are balanced. If not, you know why you are having trouble.

 

[mk3-4-me]

Im not ignoring the checkin of the VF. I just said that I didn't, nor do I know how.

What is the procedure?

 

[mk3-4-me]

Well I bypassed my J tube. On initial drive it seemed good. AFRs went to 11-12 when I gave it gas to go, still kinda bogs, but not as bad. But now when I drive it stays lean at like 14.6. Even when I give it more gas, it climbs to 15 a couple times...

Coukd it be because I have a Lexus AFM and a big turbo, do it's just given alot of air??

I think I'm gunna have to wait for maf-t now. I don't like this!

At idle right now, it's average of 15.2. So that seems good. But driving it doesn't go to 13 at all. It did the first time I drove it today after I bypassed the J tube.

It still cuts in n out when I give it more gas, but not as much.

When I give it gas at idle it goes to 13-12-11 depending on how much gas I give. But not when I'm drivin for some reason...

What Could it be??